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2

Addition

and

Subtraction

LEARNING ObjEctIvEs

After studying this chapter, students will be able to...
y add numbers with up to 5 digits with regrouping
y understand the properties of addition

y subtract numbers with up to 5 digits with regrouping
y understand the properties of subtraction
y estimate the sum and difference
y apply the concepts of addition and subtraction to solve real-life problems

21 st
Century #Subject Enrichment
Skills
Warm Up A Visit to a Book Fair

A book fair is a great event for all book lovers. The National
Book Fair is organised by the National Book Trust every
year. It is held at Pragati Maidan in New Delhi.

Recently, a book fair was held in the city. The number of visitors
in different sections in the first two days was as follows:

Number of Book Fair Visitors
Sections Fiction Language Children's Books Non-fiction Stationery

Weekdays
(Mon-Fri) 528 840 710 712 425

Weekend
(Sat-Sun) 1020 1245 1540 984 1628

25
Addition and Subtraction